Removing external/wpt/cookies/http-state/domain-tests.html from expectation

Remove [ Timeout ] from external/wpt/cookies/http-state/domain-tests.html since
it is already marked as slow.

NOTRY=TRUE
TBR=pdr@chromium.org
BUG=875195

Change-Id: If55e788194015b93f32a98b8d93d8c3084037475
Reviewed-on: https://chromium-review.googlesource.com/1180504Reviewed-by: Tien-Ren Chen <trchen@chromium.org>
Commit-Queue: Tien-Ren Chen <trchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584245}

third_party/WebKit/LayoutTests/TestExpectations

@@ -4989,7 +4989,6 @@ crbug.com/874737 [ Android ] animations/svg-attribute-interpolation/svg-numOctav
 # Sheriff 2018-08-17
 crbug.com/869726 [ Mac ] virtual/scroll_customization/fast/events/touch/touch-latched-scroll-node-removed.html [ Pass Failure ]
 crbug.com/875170 animations/interpolation/svg-stroke-dasharray-interpolation.html [ Timeout Pass ]
-crbug.com/875195 external/wpt/cookies/http-state/domain-tests.html [ Timeout Pass ]
 
 # Test frequently times out on Mac CQ bots.
 crbug.com/874703 [ Mac ] http/tests/devtools/extensions/extensions-panel.js [ Timeout Pass ]